✈️ AS9100
AS9100 Rev D Sheet Metal Suppliers for Flight Hardware
Forming a bracket out of 2024-T3 to a tenth of a degree is the easy part; proving the exact configuration, lot, and operator behind that bracket two years later is what AS9100 is really about. When a sheet metal shop carries AS9100 Rev D, you are buying a fabrication system that treats traceability and foreign-object control as production requirements, not afterthoughts.
AS9100ISO 9001NADCAP
The aerospace clauses that change how a fab shop runs
AS9100 Rev D fully incorporates ISO 9001:2015 and then adds roughly 100 aerospace-specific requirements maintained by the IAQG. In a sheet metal context the heavy hitters are Clause 8.1.2 (configuration management), 8.1.3 (product safety), 8.1.4 (prevention of counterfeit parts), and 8.5.1.3 (control of FOD, foreign object debris). Configuration management is the one that reshapes the floor most: every traveler is tied to a specific drawing revision and an engineering baseline, so a shop cannot quietly run last quarter's flat pattern after a revision changed a bend relief.
FOD control under 8.5.1.3 is not a poster on the wall. It drives shadow boards for tooling, tool-control logs, deburring sign-offs, and clean-line discipline in areas where a stray weld spatter or a missing rivet could lodge in a flight assembly. Auditors will physically walk the brake and weld cells looking for FOD-generating debris and the procedures that capture it.
First-article inspection is governed by AS9102, which prescribes the three forms (Form 1 part identification, Form 2 product and material accountability, Form 3 characteristic accountability) that document every drawing characteristic with a ballooned print and actual measured values. Key characteristics flagged on the drawing get statistical attention under 8.5.1.2. None of this exists in a plain 9001 shop, and it is exactly what a prime's flow-down requires.
How AS9100 differs from a baseline 9001 fab registration
The cleanest way to think about it: every AS9100 shop is also 9001 compliant, but the reverse is never true. The added aerospace clauses turn a generic quality system into one built for high-consequence, low-tolerance-for-escape work. Risk management in Clause 6 is expanded, special-requirements and critical-items handling is formalized, and the registration is administered through the OASIS database under the SAE/IAQG scheme rather than a registrar's private directory.
The audit itself is stricter. AS9100 surveillance uses a process-effectiveness assessment with mandatory performance metrics (on-time delivery and quality escape rates) that the shop must report and trend. A 9001 audit can pass a shop with a tidy binder; an AS9100 audit penalizes a shop whose metrics show it is not actually delivering, even if the paperwork is clean.
For a buyer, the difference shows up in escapes and recovery. When a nonconformance reaches you from an AS9100 shop, the corrective-action loop, the supplier's containment, and the configuration history are all in place to bound the problem to specific serial numbers and heat lots. That bounding is the entire reason aerospace primes mandate AS9100 on the bill of materials.
Verifying AS9100 status through OASIS, not a PDF
AS9100 certificates are tracked in OASIS (Online Aerospace Supplier Information System), the IAQG's master database. Unlike a generic 9001 cert, you can and should confirm an aerospace supplier directly there: OASIS shows the certification body, certificate status, scope, and any suspension or withdrawal. A shop that is genuinely AS9100 certified will hand you their OASIS-listed cert number without hesitation.
Check that the scope explicitly covers sheet metal or precision fabrication for aerospace, and watch for the gap where a shop holds AS9100 for machining but is quoting you formed and welded assemblies the cert does not cover. Also confirm whether the special processes your part needs (welding, chemical processing, heat treat, NDT, coatings) are done in-house under NADCAP or outsourced to a NADCAP-accredited processor, because AS9100 itself does not grant special-process competency.
Red flags specific to aerospace: a certificate that names a certification body not recognized in OASIS, a lapsed surveillance audit, or a shop claiming AS9100 while admitting they have no FOD program when you tour the floor. The walk-through tells you as much as the database.
Records, traceability, and lead-time reality on aerospace parts
Expect a documentation package, not a single CoC. A complete aerospace sheet metal shipment typically carries the AS9102 first-article package (Forms 1-3) on the initial run, a certificate of conformance referencing the drawing and revision, full material traceability to heat and lot with mill certs, certs from every special-process source (weld, chem film/anodize per MIL-A-8625, NDT results), and a dimensional report against the ballooned print. Serialization and lot control travel with the parts so any future escape can be bounded.
This rigor has a calendar and a cost. A first article on a new aerospace part commonly adds one to three weeks over the bare fabrication time because the FAI has to be completed, reviewed, and sometimes source-inspected before production release. The AS9100 premium over commercial work is real, often 15 to 40 percent depending on complexity and the number of special processes, driven by inspection labor, documentation, and the certified supply chain behind plating and NDT.
The payoff is risk transfer. On flight hardware, an unbounded escape can ground a fleet or trigger a recall costing orders of magnitude more than the fabrication. AS9100 is how the prime pushes that traceability obligation down to the shop forming the metal, and why it is non-negotiable on the bill of materials.
Frequently Asked Questions
If the part flies, feeds a flight assembly, or sits on an aerospace prime's bill of materials, you almost certainly need AS9100 because the prime's flow-down contractually requires it. ISO 9001 alone lacks the configuration management, FOD control, AS9102 first-article structure, counterfeit-parts prevention, and product-safety clauses that aerospace work demands. There are narrow exceptions: ground support equipment, tooling, and non-flight commercial aerospace hardware can sometimes be bought from a strong 9001 shop if your customer's flow-down explicitly allows it. But the moment a part is installed on or near flight hardware, AS9100 is the floor. The mistake to avoid is the reverse: paying the AS9100 premium for a part that has no aerospace pedigree requirement, like a shop fixture or a commercial enclosure. Read your own customer's purchasing requirements first, because they dictate the answer more than any general rule. When in doubt, ask the prime's supplier-quality contact whether a 9001-only source is acceptable for that specific part number.
Use OASIS, the Online Aerospace Supplier Information System maintained by the IAQG. It is the authoritative registry for AS9100 (and AS9110/AS9120) certifications and reflects live status, certification body, scope, and any suspension or withdrawal. A legitimate AS9100 sheet metal shop will give you their OASIS-listed certificate number on request. Confirm three things: that the certificate status is active, that the scope explicitly covers sheet metal or precision fabrication for aerospace rather than just machining or assembly, and that the certification body is IAQG-recognized. Then look past the certificate to capability: AS9100 does not grant special-process competency, so verify that welding, chemical processing, heat treat, NDT, and coatings are either performed in-house under NADCAP or routed to NADCAP-accredited processors. Warning signs include a certification body absent from OASIS, an overdue surveillance audit, or a shop that claims AS9100 yet shows no FOD program or tool control when you tour the floor. The on-site walk-through is as informative as the database lookup.
AS9102 is the aerospace first-article inspection standard. It defines three forms: Form 1 (part number accountability), Form 2 (product and raw-material accountability, including material certs and special-process certs), and Form 3 (characteristic accountability, where every drawing dimension is ballooned and reported with its actual measured value). On a new aerospace sheet metal part, or after a significant change to design, process, source, or a lapse in production, AS9100 requires a fresh FAI. You should receive the complete AS9102 package on the initial production run, and you should require it on the purchase order so there is no ambiguity. The FAI is the document that proves the very first acceptable part met every characteristic on the print, and it becomes the baseline against which later production is judged. Budget time for it: completing, reviewing, and where required source-inspecting an FAI commonly adds one to three weeks to the first lead time. After the FAI is approved, follow-on lots ship against a certificate of conformance plus material and special-process traceability rather than a full FAI each time.
The premium, often 15 to 40 percent over comparable commercial work, comes from labor and supply chain, not from the certificate itself. Inspection is the largest driver: ballooned prints, AS9102 first articles, dimensional reports, and key-characteristic monitoring all consume metrology time that commercial parts skip. Documentation adds more: full heat-and-lot material traceability, certificates of conformance tied to drawing revisions, and certs from every special-process source must be assembled and retained. The supply chain behind the part is also more expensive because plating, anodize per MIL-A-8625, welding, and NDT have to flow through NADCAP-accredited processors who charge a premium for their accreditation and paperwork. FOD control, tool control, and configuration management consume floor discipline and overhead that show up in the rate. Finally, the certified shop carries the cost of OASIS-administered audits and the corrective-action infrastructure that bounds escapes. You are paying for risk transfer: on flight hardware, an unbounded escape can ground aircraft and cost orders of magnitude more than the fabrication, which is exactly what AS9100 exists to prevent.
Last updated: July 2026
Find AS9100-Certified Sheet Metal Suppliers
Search verified sheet metal shops that hold AS9100.
No logins. No email gates. Just results.